More and more contemporary house designs focus on open spaces, large glazed areas and natural light, which connects the interior with the surroundings. Where the roof flows seamlessly into a knee wall and the window serves as an exit to the terrace or balcony, solutions that go beyond standard designs are what we are looking for. The appropriate flashing becomes a key element that ensures the stability of the entire installation, emphasising the minimalist appearance of the roof and allowing the full potential of the terrace window to be exploited. The EO_-T Thermo X00 flashing has been developed as a component compatible with FAKRO terrace windows, which create an impressive connection between the roof and the wall. It ensures tightness, insulation and a consistent appearance of the building, which is particularly important in modern construction.